Great Place to Work is a research and consulting firm and for this ranking they surveyed responses from more than 51,000 epmployees.

“Leaders with other companies have asked me what we do to consistently be a great place to work,” says Ray Kowalik, chairman and CEO, Burns & McDonnell. “They ask it like it’s an idea or a benefit. We approach our work with one simple question: How would you make your decisions if you owned the company?” He continued, “Being a 100 percent employee-owned company has created our foundation to being a great workplace. We all act like we own the place — because we do. It truly creates a culture of accountability, entrepreneurship and teamwork to make each other and our clients successful. That is our secret sauce.”